ath9k: fix a null pointer deref issue

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@24312 3c298f89-4303-0410-b956-a3cf2f4a3e73
master
Felix Fietkau 2010-12-07 18:22:43 +00:00
parent 75c9c63874
commit 5e704e5af6
1 changed files with 14 additions and 0 deletions

View File

@ -2137,3 +2137,17 @@
}
/* add interfaces */
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -1745,7 +1745,10 @@ int ath_tx_start(struct ieee80211_hw *hw
int frmlen = skb->len + FCS_LEN;
int q;
- txctl->an = (struct ath_node *)sta->drv_priv;
+ /* NOTE: sta can be NULL according to net/mac80211.h */
+ if (sta)
+ txctl->an = (struct ath_node *)sta->drv_priv;
+
if (info->control.hw_key)
frmlen += info->control.hw_key->icv_len;